User Guide

CHAPTER 13 TROUBLESHOOTING

13-44

1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

10 When Replacing the CCD Driver PCB

Check the setting of the DIP switch on the old DC driver PCB, and set the DIP switch on the

new DC driver PCB.

11 Checking the Photointerrupter

The copier allows the use of its service mode when checking its photointerrupers in addition to

the use of a conventional meter.

1. Using a Meter

1) Set the meter range to 30 VDC.

2) Connect the - probe of the meter to J101-7 (GND) on the DC driver PCB or J3-3 (GND) on the

deck driver PCB.

3) Connect the (+) probe of the meter to the terminals (on the driver PCB) indicated on the pages

that follow.

4) Make checks as shown.

2. Using Service Mode

1) Select I/O DISPLAY in service mode.

2) Bring up the I/O address to check, and make checks as shown.